EP0270260B1 - Agrafeuse chirurgicale pour anastomose bout à bout - Google Patents

Agrafeuse chirurgicale pour anastomose bout à bout Download PDF

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Publication number
EP0270260B1
EP0270260B1 EP87309909A EP87309909A EP0270260B1 EP 0270260 B1 EP0270260 B1 EP 0270260B1 EP 87309909 A EP87309909 A EP 87309909A EP 87309909 A EP87309909 A EP 87309909A EP 0270260 B1 EP0270260 B1 EP 0270260B1
Authority
EP
European Patent Office
Prior art keywords
housing
anvil
shaft
sleeve
cartridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87309909A
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German (de)
English (en)
Other versions
EP0270260A1 (fr
Inventor
David T. Green
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States Surgical Corp
Original Assignee
United States Surgical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United States Surgical Corp filed Critical United States Surgical Corp
Priority to AT87309909T priority Critical patent/ATE80985T1/de
Publication of EP0270260A1 publication Critical patent/EP0270260A1/fr
Application granted granted Critical
Publication of EP0270260B1 publication Critical patent/EP0270260B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis in a single operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis in a single operation
    • A61B17/1155—Circular staplers comprising a plurality of staples
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/32053—Punch like cutting instruments, e.g. using a cylindrical or oval knife
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2901—Details of shaft
    • A61B2017/2905—Details of shaft flexible

Definitions

  • This invention relates to a surgical stapler apparatus. More particularly, this invention relates to a flexible surgical stapler apparatus for use in end-to-end anastomosis.
  • various types of surgical stapling devices have been used for the stapling of tissue.
  • various types of devices have been known for an end-to-end anastomosis for rejoining the lumen of a tubular organ.
  • the devices have been provided with a stationary anvil against which staples may be formed by applying a force through staple pushers which serve to eject the staples from a cartridge against the anvil.
  • these devices have also employed a flexible shaft, for example, as described in U.S. Patents 4,485,817 and 4,488,523 for the stapling of sites which may be inaccessible for devices having a rigid shaft.
  • European Patent Application 0173451 published March 5, 1986 describes a flexible stapler assembly having an anvil which is movable against stationary staples. As described, a staple pusher is mounted in a stationary manner on a firing head assembly while a cable is secured to the anvil for pulling of the anvil relative to the stationary staple pusher in order to drive the staples through the tissue to be stapled.
  • the described assembly requires a number of springs which, in turn, complicate the construction as well as the operation of the assembly.
  • the invention provides a surgical stapler apparatus, for example of the flexible end-to-end anastomosis type, which employs a housing and a shaft which is movably mounted in the housing for relative longitudinal movement.
  • an anvil is mounted on a distal end of the shaft
  • an annular knife projects axially from the distal end of the housing towards the anvil
  • an annular stapler pusher projects axially from the distal end of the housing towards the anvil radially outside the knife.
  • a suitable means such as a cable is provided for moving the shaft into the housing and, thus, the anvil towards the knife.
  • annular means for mounting an annular stapling cartridge having a plurality of staples on the housing in alignment with the pusher.
  • This means includes a sleeve which is slidably mounted on the housing for the movement between an extended position corresponding to a retained position of the staples in the cartridge and a retracted position corresponding to an expelled position of the staples from the cartridge.
  • this means also includes a mounting ring which is secured to and which extends from the sleeve concentrically about the pusher and the knife for mounting of a stapling cartridge therein.
  • cam means are provided for securing the sleeve relative to the housing during movement of the shaft and anvil to a predetermined point spaced from the knife so as to prevent movement of the sleeve and thus the cartridge.
  • a cam surface is provided on the shaft at an intermediate location within the housing in order to actuate the cam means and, thus, release the sleeve for movement relative to the housing in response to continued movement of the shaft and, thus, the anvil towards the knife. In this way, the anvil pushes the cartridge relative to the pusher in order to expel the staples of the tissue between the anvil and the cartridge.
  • the cam means may be in the form of a plurality of circumferentially spaced balls which are mounted in the housing for radial movement during passage of the cam surface of the shaft thereby.
  • the cam surface may be a conical annular surface located between an enlarged diameter portion of the shaft and a smaller diameter portion of the shaft.
  • the housing can be formed of a pair of coaxial sections which are telescopically fitted into each other with a spring between one of the housing sections and the sleeve for biasing the sleeve into the extended position.
  • the other housing section includes a conical exterior surface while the sleeve has a conical interior surface for abutting the exterior surface of the housing section when in the extended position. The formation of the housing into two sections facilitates the assembly of the sleeve over the housing.
  • the shaft is disposed within the housing in a non-rotatable manner.
  • the shaft is provided with at least one longitudinal spline while the housing is provided with at least one groove receiving the spline in order to secure the shaft against rotation in the housing.
  • a releasable lock means can be provided for preventing proximal movement of the shaft past a certain point in order to prevent premature firing of the staples.
  • the apparatus In order to use the surgical stapler apparatus, the apparatus is positioned in the usual fashion relative to two sections of lumen which are to be joined together. After necking down of the two sections between the anvil and the cartridge, the shaft is drawn into the housing so that the anvil moves into a position in which the two sections of tissue are clamped between the anvil and the cartridge. At this time, the anvil is spaced and locked at a predetermined point from the knife, i.e. a tissue gap set position, and the cartridge is positively secured against axial movement. Thereafter, the lock means is actuated to release the shaft on which the anvil is mounted and the apparatus is actuated so that the anvil is pulled further towards the housing.
  • the cam surface on the shaft then passes the cam means to release the sleeve and the anvil, by pressing the tissue against the cartridge, forces the cartridge to move over the pusher.
  • the stationary staples then pierce the tissue between the cartridge and anvil.
  • the ends of the staples will have passed through the tissue and will have been clinched by the anvil to secure the two sections of tissue together.
  • the annular knife will have cut through the the tissue in the usual manner.
  • the anvil After stapling, the anvil can be moved away from the housing via the cable and, thereafter, the instrument can be removed in the usual fashion.
  • the surgical stapler apparatus 10 is of flexible construction.
  • the apparatus includes an applicator portion 11 at the distal end, an actuator portion (not shown) at a proximal end and a flexible shaft 12 joining the applicator portion 11 and the actuator portion (not shown).
  • the apparatus is used to staple together two sections T of tissue of a lumen.
  • the applicator portion 11 includes a housing 13 which is formed of a pair of coaxial sections 14, 15 which are telescopically fitted into each other.
  • the proximal housing section 14 includes an annular shoulder 16 near the proximal end for purposes as described below while the distal housing section 15 has an enlarged distal section which includes a conical exterior surface 17.
  • the applicator portion 11 also has a shaft 18 which passes through the housing 13 and is secured at the proximal end to a means such as a flexible cable 19, which extends to the actuator portion (not shown) and forms a part of the flexible shaft 12 for moving the shaft 18 relative to the housing 13.
  • a means such as a flexible cable 19, which extends to the actuator portion (not shown) and forms a part of the flexible shaft 12 for moving the shaft 18 relative to the housing 13.
  • the distal end of the shaft 18 carries an anvil 20 which is removably mounted thereon by suitable means (not shown).
  • the shaft 18 carries a central bore 21 in which the cable 19 is received as well as a clinched portion 22 by which the shaft 18 is fixed to the cable 19 in a permanent manner.
  • the shaft 18 is mounted in the housing 13 in a non-rotatable longitudinally movable manner.
  • the shaft 18 has a plurality of circumferentially spaced axially disposed grooves 23 while each housing section 14, 15 has a plurality of splines 24 which are slidably disposed in the grooves 23 in mating relation.
  • the shaft 18 also has a conical annular surface 25 at an intermediate region within the distal housing portion 15 to separate an enlarged diameter portion 26 from a reduced diameter portion 27.
  • the anvil 20 is of conventional structure and includes, for example, two annular rows of indentations 28 for the clinching of staples.
  • annular knife 29 is mounted on the distal end of the housing 13 and projects axially therefrom towards the anvil 20.
  • annular staple pusher 30 is also mounted at the distal end of the housing 13 to project towards the anvil 20 radially outside the knife 29.
  • This pusher 30 has two annular arrays of fingers 31 which project axially towards the anvil 20.
  • Both the knife 29 and the pusher 30 are mounted on the distal end of the housing portion 15 in any suitable manner, for example in slide-fit non-rotatable relation.
  • An annular means 32 is also disposed about the distal end of the housing 13 in order to mount an annular stapling cartridge 33 containing, for example, two annular rows of staples 34 in alignment with the pusher fingers 31.
  • This annular means 32 includes a mounting ring 35 and a sleeve 36.
  • the mounting ring 35 encircles the distal end of the housing 13 and covers over the pusher 30 and knife 29.
  • the cartridge 33 is stepped, as shown, at the distal end so as to be fitted within the ring 35 while forming a smooth continuation of the outer surface of the ring 35.
  • the sleeve 36 has the ring 35 slidably mounted thereon in suitable fashion.
  • the sleeve 36 is contoured to slidably fit over the two housing sections 14, 15 and has an internal conical surface 37 facing the external conical surface 17 of the distal housing section 15. When in the position illustrated in Fig. 2, the conical surfaces 37, 17 abut each other.
  • a spring such as a compression spring 38, is disposed between the end of the proximal housing section 14 and the sleeve 36 in order to bias the sleeve 36 in a distal direction.
  • the sleeve 36 is provided with a plurality of radial ports 39 which serve to vent the space between the sleeve 36 and the distal housing section 15.
  • a cam means 40 is provided for securing the sleeve 36 relative to the housing 13 during movement of the anvil 20 to a predetermined point (see Fig. 3) spaced from the knife 29.
  • the cam means 40 cooperates with the conical annular surface 25 of the shaft 18 which, thus, acts as a cam surface, and is positioned relative to the sleeve 36 for movement relative to the housing 13 in response to continued movement of the anvil 20 towards the knife 29 (see Fig. 4) whereby the anvil 20 is able to push the cartridge 33, mounting ring 35 and sleeve 36 relative to the pusher 30 in order to expel the staples 34 from the cartridge 34.
  • the cam means 40 includes a plurality of circumferentially spaced latches in the form of balls 41 which are mounted in radial bores 42 in the proximal housing section 11 in a cage-like manner for radial movement during passage of the annular cam surface 25 thereby.
  • the cam means 40 includes an inclined cam surface 43 on the sleeve 36 and a cylindrical surface 44 which extends proximally from the cam surface 43.
  • the balls 41 are positioned between and are in contact with the enlarged diameter portion 26 of the shaft 18 and the cam surface 43 of the sleeve 36 at the point where the cylindrical surface 44 merges into the cam surface 43.
  • the shaft 18 can be moved in a distal or proximal direction relative to the housing 13 so that the balls 41 merely ride on the enlarged diameter portion 26 of the shaft 18.
  • the sleeve 36 is prevented from moving in a proximal direction relative to the housing 13 since the balls 41 otherwise jam the sleeve 36 against such a movement.
  • a releaseable lock means 45 is provided to prevent proximal movement of the shaft 18 past a certain point.
  • the lock means 45 includes a latch 46 which is pivotally mounted on a fixed pivot pin 47 within a suitable recess 48 in the proximal housing section 14.
  • This latch 46 has a hooked end 49 which is sized to abut the proximal end of the shaft 18 when the shaft 18 moved proximally, e.g. from the position shown in Fig. 1 to the position shown in Fig. 3.
  • a spring 50 is also provided to bias the latch 46 into the locking position shown.
  • a cam means 51 in the form of a ball engages between an inclined cam surface 52 at a distal end of the latch 45 and a wall of the recess 48.
  • a cable 53 passes through the ball 51 in fixed relation and extends over a guide pin 54 in the recess 48 and through the flexible shaft 12 to a point e.g. at a proximal end of the applicator portion 11.
  • the proximal end of the cable 53 is mounted in a manner to be pulled by a surgeon in order to release the latch 45.
  • pulling of the cable 53 causes the ball 51 to move proximally which, in turn, pivots the latch 45 counter-clockwise, as viewed, from the locking position to a release position with the hooked end 49 out of the path of the shaft 18.
  • the flexible shaft 12 includes a flexible axially rigid tube 55 of conventional construction which extends from the actuator portion (not shown) about the cable 19 to the housing 13 of the applicator portion 11. As indicated, the tube 55 abuts against the annular shoulder 16 of the proximal housing section 14 so as to retain the housing 13 in a stationary manner relative to the actuator portion (not shown). Other suitable means (not shown) may also be provided in abutment with the proximal end of the housing 13 in order to maintain the housing 13 stationary relative to the applicator portion 11.
  • the applicator portion 11 is in an open position.
  • the sleeve 36 is in an extended position the staples 34 are in a retained position within the cartridge.
  • the shaft 18 is free to move axially while the balls 41 lock the sleeve 36 relative to the housing 13.
  • the surgical stapler apparatus 10 is inserted into the lumen of two tissue sections T which are to be drawn together.
  • the shaft 18 is drawn into the housing 13 by pulling on the cable 19 via suitable linkages in the actuator portion (not shown) as is known.
  • This movement proceeds with the anvil 20 moving into a predetermined position spaced from the cartridge 33, for example by a distance of 1 to 1.5 millimeters.
  • the two sections of tissue T are clamped between the anvil 20 and the cartridge 33.
  • the shaft 13 abuts against the hooked end 49 of the spring biased latch 45 and is locked against further proximal movement together with the sleeve 36.
  • the surgeon actuates the apparatus 10, for example by triggering a pistol grip or handle (not shown) in the actuator position 11 which is linked to the cable 19 in a suitable manner (not shown) in order to pull the cable 19 and, thus, the shaft 18 proximately a short distance.
  • the anvil 20 is pulled towards the housing 13.
  • the anvil 20 presses the clamped tissue T against the cartridge 33 and, thus, forces the cartridge 33 to move over the pusher 30.
  • the balls 41 begin to move radially inwardly under the camming action of the cam surface 43 of the sleeve 36 against the bias of the spring 38.
  • the annular knife 29 cuts the inner circumferential edges of the tissue T in the usual fashion.
  • the applicator portion (not shown) is actuated in a conventional manner to move the shaft 18 and anvil 20 distally so as to unclamp the stapled tissue joint and thereafter the stapler apparatus 10 is removed form the lumen.
  • the cam means 40 for preventing movement of the cartridge 33 relative to the staples 34 until stapling action is required is of relatively simple reliable construction.
  • the position (i.e. tissue gap) at which the anvil 20 is initially brought into a predetermined spaced position from the staple cartridge 33 can be easily and precisely determined by the construction of the various components of the applicator portion 11.
  • the spring 38 may be of any suitable strength so as to initially bias the sleeve 36 against the conical exterior surface 17 of the housing section 15 while at the same time being of a weak strength to permit the anvil 20 to move the cartridge 33 proximally via the clamped tissue T. That is, the strength of the spring 38 should not be such that the anvil 20 would crush the tissue T.
  • the cam surface 25 on the shaft 18 begings to bias the balls 41 radially outwardly.
  • the balls 41 serve to push to sleeve 36 distally relative to the housing 13 along with the biasing force produced by the spring 38.
  • the latch 45 is spring biased back into the locking position behind the shaft 18.
  • the surgical stapling apparatus 10 is preferably actuated in a single step manner as described above but may also be constructed so that the anvil 20 moves in two stages from the open position shown in Fig. 2 to the tissue gap set position shown in Fig. 3 and then to the fired position shown in Fig. 4.
  • the invention thus provides a surgical stapler apparatus wherein an anvil can be moved relative to a stapling cartridge in a relatively simple easy-to-use and reliable manner.
  • the invention provides a flexible end-to-end anastomosis stapler apparatus of simple construction.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)

Claims (17)

  1. Appareil formant agrafeuse chirurgiale (10), comprenant :
       un logement (13);
       un arbre (18) monté de façon non-tournante dans ledit logement pour un mouvement longitudinal relatif à l'intérieur;
       une enclume (20) montée sur une extrémité distale dudit arbre; un poussoir d'agrafes annulaire (30) en saillie axialement à partir d'une extrémité distale dudit logement vers ladite enclume;
       des moyens (19) pour déplacer ledit arbre dans ledit logement; et
       des moyens annulaires pour monter sur ledit logement, en alignement avec ledit poussoir, une cartouche d'agrafage annulaire (33) contenant une pluralité d'agrafes pour agrafer du tissu disposé entre ladite enclume et ladite cartouche, ledit moyen comprenant un manchon (36) monté de façon coulissante sur ledit logement en vue d'un mouvement entre une position d'extension et une position rétractée;
       l'appareil étant caractérisé par des moyens de came (40) entre ledit logement et ledit manchon pour fixer ledit manchon relativement audit logement pendant le mouvement proximal de ladite enclume vers un point prédéterminé relativement audit logement, ledit moyen de came étant positionné relativement audit manchon pour un mouvement relativement audit logement en réponse à la continuation du mouvement proximal de ladite enclume depuis ledit point, par quoi ladite enclume pousse ledit moyen annulaire relativement audit poussoir pour expulser les agrafes d'une cartouche d'agrafes sur celui-ci pour agrafer du tissu entre ladite enclume et une cartouche sur ledit logement.
  2. Appareil formant agrafage chirurgical selon la revendication 1 , dans lequel le moyen de came (40) est actionné par une surface de came (25) sur l'arbre à une localisation intermédiaire à l'intérieur dudit logement.
  3. Appareil formant agrafeuse chirurgicale selon la revendication 2, dans lequel la surface de came est conique et annulaire.
  4. Appareil formant agrafeuse chirurgicale selon l'une des revendications précédentes, comprenant un couteau annulaire (29) faisant saillie axialement à partir d'une extrémité distale dudit logement vers ladite enclume; et dans lequel le poussoir d'agrafe annulaire (30) est situé radialement à l'extérieur dudit couteau; et ledit moyen (19) pour déplacer ledit arbre dans ledit logement déplace également ladite enclume vers ledit couteau.
  5. Appareil formant agrafeuse chirurgicale selon l'une des revendications précédentes, dans lequel le moyen annulaire pour monter la cartouche comprend une bague de montage concentrique à et autour dudit poussoir, pour le montage de ladite cartouche sur celui-ci.
  6. Appareil d'agrafage chirurgical selon la revendication 5, dans lequel le moyen de came comprend des moyens pour fixer ladite bague relativement audit logement pendant le déplacement de ladite enclume à un point déterminé espacé dudit couteau et pour relâcher ladite bague de sa fixation avec ledit logement en réponse à la continuation du mouvement de ladite enclume vers ledit couteau, par quoi ladite enclume pousse le tissu et ladite cartouche vers ledit poussoir pour expulser lesdites agrafes de ladite cartouche tout en poussant lesdites agrafes à travers le tissu et contre ladite enclume pour le rabattement de celles-ci.
  7. Dispositif selon l'une des revendications précédentes, dans lequel le moyen de came comprend une pluralité de billes espacées circonférentiellement montées dans ledit logement pour un mouvement radial en réponse à la continuation dudit mouvement proximal de ladite enclume.
  8. Appareil selon l'une des revendications précédentes, dans lequel ledit logement comprend une paire de sections coaxiales (14, 15) ajustées de façon télescopique l'une dans l'autre.
  9. Appareil selon l'une des revendications précédentes et qui comprend, en outre, un ressort entre l'une des sections de logement et ledit manchon pour solliciter ledit manchon dans ladite portion en extension.
  10. Appareil selon la revendication 9, dans lequel l'autre desdites sections de logement (14, 15) comprend une surface extérieure conique (17), et ledit manchon présente une surface intérieure conique (37) pour buter contre ladite surface extérieure dans ladite position en extension.
  11. Appareil selon l'une des revendications précédentes, dans lequel ledit poussoir est une bague annulaire possédant au moins une rangée annulaire de doigts (31) pour pousser une rangée d'agrafes (31) d'une cartouche (33) montée sur ledit moyen annulaire.
  12. Appareil selon l'une des revendications précédentes, dans lequel ledit moyen pour déplacer ledit arbre est un câble flexible (19) fixé à une extrémité proximale dudit arbre et un tube flexible (55) autour du câble, son extrémité distale étant fixée audit logement.
  13. Appareil selon l'une des revendications précédentes, qui comprend, en outre, un moyen de verrouillage amovible (45) pour empêcher un mouvement proximal dudit arbre au-delà d'un certain point.
  14. Appareil selon la revendication 13, dans lequel ledit moyen de verrouillage comprend un loquet (46) monté pivotant dans ledit logement possédant une extrémité proximale pour buter contre ledit arbre, un moyen de came (51) pour faire pivoter ledit loquet dudit arbre et un câble (53) s'étendant depuis ledit moyen de came pour faire déplacer ledit moyen de came afin de relâcher ledit loquet.
  15. Appareil selon l'une des revendications précédentes, qui comprend, en outre, au moins une rainure (23) dans ledit arbre (18) et au moins une cannelure (24) sur ledit logement recevant ladite cannelure pour immobiliser ledit arbre en rotation dans ledit logement.
  16. Appareil selon l'une des revendications précédentes, dans lequel le logement comprend un épaulement annulaire (16) contre lequel le manchon peut buter dans sa position rétractée.
  17. Appareil selon l'une des revendications précédentes, dans lequel le manchon (36) possède une pluralité d'ouvertures radiales (39) pour décharger ou éventer l'espace entre le manchon et le logement.
EP87309909A 1986-11-13 1987-11-10 Agrafeuse chirurgicale pour anastomose bout à bout Expired - Lifetime EP0270260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87309909T ATE80985T1 (de) 1986-11-13 1987-11-10 Chirurgisches klammernahtgeraet fuer die end-an-end-anastomose.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US930662 1978-08-02
US06/930,662 US4776506A (en) 1986-11-13 1986-11-13 Surgical stapler apparatus

Publications (2)

Publication Number Publication Date
EP0270260A1 EP0270260A1 (fr) 1988-06-08
EP0270260B1 true EP0270260B1 (fr) 1992-09-30

Family

ID=25459585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87309909A Expired - Lifetime EP0270260B1 (fr) 1986-11-13 1987-11-10 Agrafeuse chirurgicale pour anastomose bout à bout

Country Status (6)

Country Link
US (1) US4776506A (fr)
EP (1) EP0270260B1 (fr)
AT (1) ATE80985T1 (fr)
CA (1) CA1272930A (fr)
DE (1) DE3782009T2 (fr)
ES (1) ES2035081T3 (fr)

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WO2020113499A1 (fr) * 2018-12-06 2020-06-11 Covidien Lp Ensemble enclume avec ensemble anneau de coupe amélioré

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ES2035081T3 (es) 1993-04-16
US4776506A (en) 1988-10-11
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ATE80985T1 (de) 1992-10-15
DE3782009D1 (de) 1992-11-05

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